Jon is going to a concert out of town. after work he has 2 hours to get to the concert 158 miles away. what speed must you maintain to get there in time

speed = distance / time

... = (158 mi)/(2 h) = 79 mi/h

Jon must maintain an average speed of 79 mph to get there in the time allotted.

m∠BEC + m∠CED = m∠BED; Angle Addition Postulate

Step-by-step explanation:

For example : If ∠MON and ∠NOK are joined such that NO is the common line segment between then then the new angle will be ∠MOK or ∠KOM.

In given figure , m∠BEC and m∠CED are joined and they have common line segment CE , then the new angle m∠BED= m∠BEC + m∠CED

Hence, the correct statement that completes the given proof :

m∠BEC + m∠CED = m∠BED; Angle Addition Postulate